Crenata | Friday, October 29th, 2021
Link : https://tryhackme.com/room/introtonetworking
- Which layer would choose to send data over TCP or UDP?
4
- Which layer checks received packets to make sure that they haven't been corrupted?
2
- In which layer would data be formatted in preparation for transmission?
2
- Which layer transmits and receives data?
1
- Which layer encrypts, compresses, or otherwise transforms the initial data to give it a standardised format?
6
- Which layer tracks communications between the host and receiving computers?
5
- Which layer accepts communication requests from applications?
7
- Which layer handles logical addressing?
3
- When sending data over TCP, what would you call the "bite-sized" pieces of data?
Segments
- [Research] Which layer would the FTP protocol communicate with?
7
- Which transport layer protocol would be best suited to transmit a live video?
UDP
- How would you refer to data at layer 2 of the encapsulation process (with the OSI model)?
Frames
- How would you refer to data at layer 4 of the encapsulation process (with the OSI model), if the UDP protocol has been selected?
Datagrams
- What process would a computer perform on a received message?
De-encapsulation
- Which is the only layer of the OSI model to add a trailer during encapsulation?
Data Link
- Does encapsulation provide an extra layer of security (Aye/Nay)?
Aye
- Which model was introduced first, OSI or TCP/IP?
TCP/IP
- Which layer of the TCP/IP model covers the functionality of the Transport layer of the OSI model (Full Name)?
Transport
- Which layer of the TCP/IP model covers the functionality of the Session layer of the OSI model (Full Name)?
Application
- The Network Interface layer of the TCP/IP model covers the functionality of two layers in the OSI model. These layers are Data Link, and?.. (Full Name)?
Physical
- Which layer of the TCP/IP model handles the functionality of the OSI network layer?
Internet
- What kind of protocol is TCP?
Connection-based
- What is SYN short for?
Synchronise
- What is the second step of the three way handshake?
SYN/ACK
- What is the short name for the "Acknowledgement" segment in the three-way handshake?
ACK
- What command would you use to ping the bbc.co.uk website?
ping bbc.co.uk
- Ping muirlandoracle.co.uk What is the IPv4 address?
217.160.0.152
- What switch lets you change the interval of sent ping requests?
-i
- What switch would allow you to restrict requests to IPv4?
-4
- What switch would give you a more verbose output?
-v
- What switch would you use to specify an interface when using Traceroute?
-i
- What switch would you use if you wanted to use TCP SYN requests when tracing the route?
-T
- [Lateral Thinking] Which layer of the TCP/IP model will traceroute run on by default (Windows)?
Internet
- What is the registrant postal code for facebook.com?
94025
- When was the facebook.com domain first registered?
29/03/1997
- Which city is the registrant based in?
Redmond
- [OSINT] What is the name of the golf course that is near the registrant address for microsoft.com?
Bellevue Golf Course
- What is the registered Tech Email for microsoft.com?
- What is DNS short for?
Domain Name System
- What is the first type of DNS server your computer would query when you search for a domain?
Recursive
- What type of DNS server contains records specific to domain extensions (i.e. .com, .co.uk*, etc)*? Use the long version of the name.
Top-Level Domain
- Where is the very first place your computer would look to find the IP address of a domain?
Local Cache
- [Research] Google runs two public DNS servers. One of them can be queried with the IP 8.8.8.8, what is the IP address of the other one?
8.8.4.4
- If a DNS query has a TTL of 24 hours, what number would the dig query show?
86400